Endress+Hauser RIA452 Mode D'emploi page 116

Commissioning
Function
(menu
item)
Function Off
Min
Max
Grad
In band
Out band
Alarm
Alarm inverse
Dec. point XXXXX
XXXX.X
XXX.XX
XX.XXX
X.XXXX
Setpoint A -99999 to 99999
0.0
Setpoint B -99999 to 99999
99999
Hysteresis -99999 to 99999
99999
Delay 0 to 99
0
Alternate No
Yes
116
Parameter setting Description
Selects limit value and fault monitoring. In the event of
device errors or incorrect input values (see error limits
Range 1 to 4 in Section 6.3.11), the relays are
switched in accordance with the failsafe mode
configured in Rel. Mode (see Section 6.3.11).
• Min: minimum with hysteresis (see Page 39)
• Max: maximum with hysteresis (see Page 40)
• Grad: gradient (see Page 41)
• In band: validity range within two values
• Out band: validity range outside of two values
• Alarm: relay is used as an alarm relay
• Alarm inverse: Relay is used as an alarm relay; the
switching behaviour of the relay is safety-oriented
such that the relay drops out in the case of a power
supply failure or a device malfunction.
Number of digits after the decimal point for the limit
value.
Measured value at which a change in the switch status
occurs (slope for gradient). Default: 0.0
The second setpoint can be configured for the "In band"
and "Out band" operating modes and is only visible if
one of these two functions was selected for this relay.
For entering the hysteresis for the threshold at
minimum/maximum as an absolute value.
Sets the limit value event delay once the threshold is
reached (in seconds) (see Page 42).
Determines the switching function for this relay:
• No: no alternating function; switch point
permanently assigned to relay
• Yes: alternate function (see Page 43)
!
Note!
Relays 1-4 can be used for the alternating function.
RIA452
Endress+Hauser